| 用离散傅里叶变换研究二维抽样的谱分布 |
| |
| 引用本文： | 王旭光. 用离散傅里叶变换研究二维抽样的谱分布[J]. 南京邮电大学学报(自然科学版), 1995, 0(3) |
| |
| 作者姓名： | 王旭光 |
| |
| 作者单位： | 南京邮电学院计算机通信工程系 |
| |
| 摘 要： | 利用离散傅里叶变换（ＤＦＴ）研究了时域中二维任意抽样的谱分布。通过构造一个二维有限区域序列，并对这一序列进行离散傅里叶变换，就能够分析不同抽样方式的谱分布，这种方法简单、直观，且具有普遍性，还提出了广义狄拉克场概念，并对经典的二维抽样定理进行了推广。
|
| 关 键 词： | 图像处理，二维抽样，谱分布，离散傅里叶变换，有限区域序列 |
An Analysis of the Spectrum of Sampled Two-Dimensional Signals by Discrete Fourier Transform |
| |
| Wang Xuguang. An Analysis of the Spectrum of Sampled Two-Dimensional Signals by Discrete Fourier Transform[J]. JJournal of Nanjing University of Posts and Telecommunications, 1995, 0(3) |
| |
| Authors: | Wang Xuguang |
| |
| Abstract: | The spectral distribution of arbitrary sampled two-dimensional analog signals in time domain is analysed by using Discrete Fourier Transform. By constructing a two-dimensional finite extent sequences and computing its Discrete Fourier Transform, the two-dimensional spectrum of sampled singnals with different sampling geometries has been analysed. The concept of general unit impuls field function is presented and the generalization of classical two-dimensional sampling theorem is given. |
| |
| Keywords: | image processing two dimensional sampling spectral distribution discrete Fourier transform finite extent sequences |
| 本文献已被 CNKI 等数据库收录！ |
